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Box type Regulator


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#1 MH81 ONLINE  

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Posted July 27, 2016 - 06:51 AM

This wasn't on my GT, but it will be the same for all box style regulators.
Our John Deere 1010 stoped charging at lower RPMs. You would have to goose it to charge and then it would eventually quit until you goose it again. Also, would start missing under load.
The two problems may not seem tied together in any way, however it seems to have had a common source.
I had previously checked all connections that were visible. So I decided to dig down to the regulator. That is where the problem was. But you could not tell that until you fixed the problem.

Disconnecting the battery and removing the cover on the regulator will expose two (some have three) electromagnet actuated contacts. I filed the points, and it charges at just over idle.
No more GEN light taunting me constantly.
Woohoo!
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#2 David Brown OFFLINE  

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Posted July 27, 2016 - 06:56 AM

I hate electrical issues but it's nice when it's an easy fix.  Glad it's back up and running the way it should be.



#3 boyscout862 ONLINE  

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Posted July 27, 2016 - 07:08 AM

Somewhere in our Manuals Section is a pamphlet with the tuneup proceedure for the old DelcoRemy regulators. On old cars they were a routine maintenance item. BTW   a poor condition battery will take out a regulator pretty quick. Good Luck, Rick


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#4 KennyP ONLINE  

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Posted July 27, 2016 - 07:16 AM

Somewhere in our Manuals Section is a pamphlet with the tuneup proceedure for the old DelcoRemy regulators. On old cars they were a routine maintenance item. BTW   a poor condition battery will take out a regulator pretty quick. Good Luck, Rick

The manual is here. I uploaded that a long time ago.


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#5 stiemmy OFFLINE  

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Posted July 27, 2016 - 03:02 PM

Here is a short video I made a while back.
It starts out with the genny, but touches on the reg..

Obviously to clean the comm. on a Delco starter/genny, the end bell needs to come off to get at it, but it shows the reg. as well. This system was inop. before I started.

One important note I forgot to add in the video is to take a knife, or scraper hook, and clean the carbon out of the grooves between the commutator contacts by gently scraping one direction, from solder connections outward AFTER cleaning the comm. surface.

WARNING!!!!!! Please be safe, I only did this running cause I have done this before, Please, disconnect the belt, and rotate by hand!!!!!!!

(Side note)Gotta love the sound of a flathead 4!!! Cheers

Edited by stiemmy, July 27, 2016 - 03:35 PM.

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#6 MH81 ONLINE  

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Posted July 27, 2016 - 06:55 PM

Nice job, glad you got it back.
I always use a broken hacksaw blade to clean the grooves. Just the way I was taught.

I didn't get to watch the end as my 4G keeps going off. Did you polarize the gen?
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#7 Cvans ONLINE  

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Posted July 27, 2016 - 07:08 PM

I've been told by a re-builder that you should sand paper to polish the commutator and contacts as garnet is non conductive and will not cause shorts. Emery cloth or paper uses aluminum oxide which is a conductor. 


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#8 stiemmy OFFLINE  

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Posted July 27, 2016 - 07:27 PM

Nice job, glad you got it back.
I always use a broken hacksaw blade to clean the grooves. Just the way I was taught.
I didn't get to watch the end as my 4G keeps going off. Did you polarize the gen?

Nope, didn't have to! ;)

Yes, a Hacksaw blade works very well, infact almost ALL oldskool motor rewinders use that method! Why, cause they all had em in thier tool boxes! Case in point, use what works for you, but dont nick the surface, or leave any burs. ;)

Edited by stiemmy, July 27, 2016 - 08:18 PM.

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#9 stiemmy OFFLINE  

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Posted July 27, 2016 - 07:30 PM

I've been told by a re-builder that you should sand paper to polish the commutator and contacts as garnet is non conductive and will not cause shorts. Emery cloth or paper uses aluminum oxide which is a conductor.


This is why compressed air IS our friend!;)

#10 stiemmy OFFLINE  

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Posted July 27, 2016 - 07:34 PM

Basically, a generator doesn't care how it's cleaned, as long as there are NO arks, or shorts in the system.
Ie, metal, loose filings, liquids, or whatnot.;)

Edited by stiemmy, July 27, 2016 - 07:36 PM.

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